To extract the beeswax from the brood comb, you could take cheesecloth and bury the old comb, pollen, dead bees, etc. in a pot large enough to hold it well underwater. Weight it down and boil the whole mess for a long time. The wax floats to the top and the sludge stays in the cloth.
After this process you can further process it by boiling it in clean water, letting it cool while floating on that, and scraping the detritus from the bottom, or melting it in the solar collector with a paper towel to filter the trash out. Using a press, you can also extract some more of the wax. I've seen pressing done once in videos.